[LAU] Channel routing with RME HDSPe AES without HDSPMixer

[Fons Adriaensen]

On Sat, Nov 26, 2016 at 05:42:12PM +0100, francois bluewin wrote:

> Needing to use outputs channels 7&8 with an input on 1&2 (MPD as
> music server), I am unable to setup a correct .asoundrc file in
> order to avoid using HDSPmixer (it works well with HDSPMixer but I
> would have preferred to avoid using the graphic interface).

Instead of using an .asoundrc you could program HDSPmixer from
a script, provided you can find out the channel numbers.

Below is an example of doing this on a Multiface II:


#!/bin/bash

# Multiface II mixer
#
# inputs:  0-7 (analog), 16-23 (adat), 24-25 (spdif)  26-33, 42..51 (playback channels)
# outputs: 0-7 (analog), 16-23 (adat)  24-25 (spdif), 26-27 (phones)

device=hw:DSP
gain=32768

function set_gain ()
{
    amixer -D $device cset numid=5 $1,$2,$3 > /dev/null 2>&1
}

function reset_matrix ()
{
    for out in $(seq 0 27); do
        for inp in $(seq 0 51); do
        set_gain $inp $out 0
        done
    done
}

echo Clearing matrix mixer ...

# Reset all
reset_matrix

echo Setting default connections ...

# Playback 1..8 to analog outs
set_gain 26 0 $gain
set_gain 27 1 $gain
set_gain 28 2 $gain
set_gain 29 3 $gain
set_gain 30 4 $gain
set_gain 31 5 $gain
set_gain 32 6 $gain
set_gain 33 7 $gain

# Playback 9..16 to ADAT outs
set_gain 42 16 $gain
set_gain 43 17 $gain
set_gain 44 18 $gain
set_gain 45 19 $gain
set_gain 46 20 $gain
set_gain 47 23 $gain
set_gain 48 24 $gain
set_gain 49 25 $gain

# Playback 17,18 to headphone amp
set_gain 50 26 $gain
set_gain 51 27 $gain

amixer -D$device sset 'Preferred Sync Reference' 'ADAT1'
amixer -D$device sset 'Sample Clock Source' 'AutoSync'

echo Done.

exit 0



-- 
FA

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